<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			.a{
				list-style-type: circle;
			}
			
			.b{
				list-style-type: square;
			}
			
			.c{
				list-style-type: upper-roman;
			}
			
			.d{
				list-style-type: lower-alpha;
			}
		</style>
	</head>
	<body>
		
		<ul class="a">
			<li>aaa</li>
		</ul>
		<ul class="b">
			<li>bbb</li>
		</ul>
		<ol class="c">
			<li>aaaa</li>
		</ol>
		<ol class="d">
			<li>bbbb</li>
		</ol>
	</body>
</html>